EP1961529B1 - Chainsaw equipped with a lubrication device and method implemented to perform this lubrication - Google Patents

Chainsaw equipped with a lubrication device and method implemented to perform this lubrication Download PDF

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Publication number
EP1961529B1
EP1961529B1 EP20080358004 EP08358004A EP1961529B1 EP 1961529 B1 EP1961529 B1 EP 1961529B1 EP 20080358004 EP20080358004 EP 20080358004 EP 08358004 A EP08358004 A EP 08358004A EP 1961529 B1 EP1961529 B1 EP 1961529B1
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EP
European Patent Office
Prior art keywords
chain
pump
electric
chain saw
cutting
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EP20080358004
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German (de)
French (fr)
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EP1961529A1 (en
Inventor
Roger Pellenc
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Pellenc SAS
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Pellenc SAS
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B17/00—Chain saws; Equipment therefor
    • B27B17/12—Lubricating devices specially designed for chain saws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B17/00—Chain saws; Equipment therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N29/00—Special means in lubricating arrangements or systems providing for the indication or detection of undesired conditions; Use of devices responsive to conditions in lubricating arrangements or systems
    • F16N29/02—Special means in lubricating arrangements or systems providing for the indication or detection of undesired conditions; Use of devices responsive to conditions in lubricating arrangements or systems for influencing the supply of lubricant
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N7/00—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated
    • F16N7/38—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated with a separate pump; Central lubrication systems
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/04—Processes
    • Y10T83/0405—With preparatory or simultaneous ancillary treatment of work
    • Y10T83/0443—By fluid application

Definitions

  • the present invention relates to a chain saw provided with a lubricating device of the guide chain / cutting chain assembly according to the preamble of claim 1. It also relates to the method used to achieve this lubrication.
  • Such a chain saw is known from the document FR 2505719 A1 .
  • Such cutting chain tools commonly called chainsaws are well known and are commonly used to cut various materials (wood, concrete, bricks, tiles, etc.). They comprise a cutting device consisting of an endless cutting chain rotatably mounted around a drive pinion and a generally oblong guide bar provided with a peripheral guide rail, and a power source. (For example constituted by a heat engine or an electric motor) performing the drive of this chain, through said pinion.
  • a lubricating liquid is stored in a tank where it is removed before being conveyed to the guide-chain / cutting chain assembly by a suitable conduit.
  • the driving of the lubricating liquid on the guide-chain / cutting chain assembly is generally carried out via a pump. It is sometimes obtained by gravity (inefficient) or by putting the storage tank in overpressure (difficult to dose because it depends on the pressure and varies with it).
  • the document FR 2,505,719 describes a device of this kind.
  • the electro-magnetic lubrication pump of the chainsaw is actuated by the drive motor of the chain of the latter, via a magneto and a microcomputer.
  • the purpose of the invention is at least to improve the lubrication efficiency of the chain saw / chain cutter assembly of the chain saws and their drive gear, to reduce the consumption of lubricating fluid and to reduce avoid frequent projections on the operator and cause soiling and burns.
  • the electric drive motor of the pump is controlled by an electronic card, which receives data relating to at least one parameter and / or operating factor of said chain saw.
  • the drive motor of the cutting line is constituted by an electric motor and this electric motor is controlled by an electronic card.
  • the electronic control board of the electric pump receives data concerning the current consumed by the electric drive motor of the cutting chain and / or relative to the torque of this motor, via the electronic card. driving said electric motor, in use of said chain saw.
  • the electronic control board of the electric pump receives data from the electronic control board of the electric motor driving the cutting line.
  • the electronic control board of the electric pump receives and processes data from one or more sensors.
  • the chain saw comprises a sensor for addressing, to the electronic pump control board of the electric pump, information concerning the temperature of the guide bar.
  • the electronic control board of the electric pump is configured to use information relating to the flow of the lubricating liquid.
  • the electronic control board of the electric pump is configured to control an intermittent operation of the pump, in order to address doses of lubricating liquid, to the cutting system.
  • the electronic control board of the electric pump is configured so that the sending of the successive doses is spaced out by a substantially constant period and that the quantities of lubricating liquid in the doses are a function of at least one one of the aforementioned operating parameters or factors.
  • the lubricating liquid driving pump is a positive displacement pump, for example a peristaltic pump, or a diaphragm pump, or a piston pump, or a vane pump, or a gear pump.
  • the same storage battery for electrical energy supplies both the motor of said electric pump and the drive motor of the cutting device which, in this case, consists of an electric motor.
  • the chain saw may also include a device for detecting insufficient flow of lubricating liquid to the cutting device and for triggering a visual or audible signal in the event of detection of such an insufficient flow rate.
  • a saw head comprising the various members of the cutting device and their drive system, is mounted at the upper end of a machine.
  • pole whose lower end is provided with a control handle, the lubricating liquid storage tank and the electric pump for dispensing this lubricating liquid are installed at the level of said handle, a conduit for conveying the liquid of lubrication connecting the storage tank to the cutting device, the conduit being preferably housed in said pole.
  • the invention also relates to a method of lubricating the cutting line of a chain saw as defined above, in which the flow rate of the lubrication liquid distribution pump is controlled as a function of the value at least one parameter or operating factor of said chain saw.
  • Another advantageous feature of this process may be that doses of lubricating liquid are intermittently fed to the cutting device.
  • the lubricating liquid doses are sent by spacing the departures of these doses by a substantially constant period, said doses containing amounts of lubricating liquid which are a function of said parameter or operating factor. .
  • a chain and pole saw is described hereinafter, but it is pointed out that the invention is also applicable to chain saws with handles of all types (single handle, raised handle, etc.) intended for all types of work (works pruning, forestry work, sawing of various materials ).
  • a pole saw chain 1 which has a control handle 2 mounted at the lower end of a tubular pole 3, at the upper part of which is mounted, in a steerable manner, a cutting head 4.
  • the cutting head 4 comprises an endless cutting chain 5 mounted on the periphery of a chain guide 6 and on a driving pinion 9.
  • the driving of this cutting chain 5 via the driving pinion 9, is made by an electric motor located inside a housing 7 at the figure 1 and referenced 8 to the figure 3 . It is not excluded to carry out this training by means of a heat engine.
  • a lubricating device of the cutting system (chain guide 6, chain 5 and drive pinion) is mounted at the lower end of the pole 3, at the handle 2.
  • This lubrication device generally designated by the reference 10 comprises a storage tank 11 which is intended to contain a reserve of lubricating liquid such as oil and which communicates with a conduit 12 for conveying this liquid to at the cutting head 4.
  • a pump 13 On this conduit 12 is connected a pump 13 for driving the lubricating liquid to said cutting head.
  • the pump 13 is coupled to an electric drive motor 13a independent of the drive motor 8 of the cutting line 5 of the cutting device 5-6 and forming an integral part of the tool.
  • the electric pump 13 is a positive displacement pump capable of sending the lubricating liquid intermittently, in the form of successive doses, to the cutting head 4.
  • it is a peristaltic pump, which has the advantage of being simple, robust and reliable.
  • the electric pump 13 delivering the lubricating liquid may be constituted by any other type of suitable pump, such as diaphragm pump, or piston pump, or vane pump, or gear pump ...
  • the reservoir 11, the pump 13 and its electric drive motor 13a, are housed in the housing delimiting the handle 2, from which the suction section 12a of the duct 12 flows.
  • the driving electric motor 13a of the pump 13 is controlled by an appropriately configured electronic card 20, and the chainsaw comprises at least one sensor making it possible to address, to said electronic card, information relating to at least one parameter or operating factor of said chain saw.
  • the drive motor 8 of the cutting chain 5 is constituted by an electric motor and this electric motor is also controlled by an electronic card 15.
  • a same storage battery 14 of electrical energy preferably constituted by a portable battery, can supply both the motor 13a of the electric pump 13 and the electric drive motor 8 of the cutting device 5-6.
  • the electronic control board 20 of the electric pump receives data relating to the electric current consumed by the electric motor 8 for driving the cutting chain, and / or relating to the torque of said motor 8, via the electronic control card 15. the latter, in use of the chainsaw.
  • the electronic control board 20 of the electric pump 13-13a can be configured to control the variable speed drive of said pump, as a function of at least one parameter derived from the data relating to the electric current consumed by the motor 8. driving the cutting chain, the torque of the engine, and / or from the temperature sensor 17 of the guide bar 6, or the oil flow sensor 16, or the oil level sensor 21.
  • the electronic control board 20 of the electric pump 13-13a is advantageously configured to control an intermittent operation of this pump in order to address dosed amounts of lubricating liquid to the cutting system 5-6.
  • the control electronic card 20 is configured so that the sending of the successive doses of lubricating liquid is spaced out by a substantially constant period and that the quantities of lubricating liquid in the doses are a function of at least one of the parameters or the aforementioned operating factors.
  • the driving pump 13 of the lubricating liquid is constituted by a positive displacement pump, for example a peristaltic pump, or a diaphragm pump, or a piston pump, or a vane pump, or a gear pump.
  • the chain saw comprises a detection device 21 of insufficient level of lubricating liquid in the tank 11.
  • the insufficiencies of flow or oil level observed by the sensors 16 or 21, respectively, cause the trigger, via the electronic control card 20, a visual or sound signal 19.
  • a saw head 4 comprising the various members of the cutting device 5-6 and their drive system 8 is mounted at the upper end of a pole 3 whose lower end is provided with a control handle 2
  • the reservoir 11 for storing the lubricating liquid and the electric pump 13-13a for dispensing this lubricating liquid are installed at the level of said handle 2 and a conduit 12a-12b for conveying the liquid of lubrication connects the storage tank 11 to the cutting device 5-6 via said pump, this duct 11 being preferably housed in said pole 3.
  • the electronic control board 20 of the electric pump 13-13a can be installed at the handle 2, while the electronic control board 15 of the drive motor 8 of the cutting chain 5 can be positioned at the cutting head 4.
  • the components of the electronic control cards 15 and 20 can be collected on the same support and installed at the control handle of the tool.
  • the chain saw according to the invention further comprises an arrangement allowing direct actuation of the electric pump 13-13a from a manual control member, for example constituted by a trigger 18 accessible on the handle 2 of the tool, so as to allow to send, preferably continuously, the oil to the chain guide assembly / cutting chain 5-6, without passing through the electronic control card 20 of said electric pump 13-13a.
  • a manual control member for example constituted by a trigger 18 accessible on the handle 2 of the tool
  • Such forced lubrication is for example used to raise the oil tank 11 to the cutting head 5-6 at the first start of the tool, or when the oil circuit 12a is empty, before the actuating the motor 8, or for purging the oil dispensing orifice formed in the chain guide 6.
  • the electric distribution pump 13-13a of the lubricating liquid is piloted by means of an electronic card 20 as a function of the value of at least one parameter or operating factor of the electric saw. chain.
  • doses of lubricating liquid are sent intermittently to the cutting device 5, 6.
  • the doses of lubricating liquid are sent by spacing the departures of these doses by a substantially constant period, said doses containing amounts of lubricating liquid which are a function of said parameter or operating factor.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • General Engineering & Computer Science (AREA)
  • Sawing (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)

Description

La présente invention concerne une scie à chaîne pourvue d'un dispositif de lubrification de l'ensemble guide-chaîne / chaîne de coupe selon le préambule de la revendication 1. Elle vise aussi le procédé mis en oeuvre pour réaliser cette lubrification.The present invention relates to a chain saw provided with a lubricating device of the guide chain / cutting chain assembly according to the preamble of claim 1. It also relates to the method used to achieve this lubrication.

Une telle scie à chaîne est connue du document FR 2505719 A1 .Such a chain saw is known from the document FR 2505719 A1 .

De tels outils à chaîne de coupe couramment appelés tronçonneuses sont bien connus et sont communément utilisés pour débiter des matériaux divers (bois, béton, briques, carreaux, etc.). Ils comprennent un dispositif de coupe constitué par une chaîne de coupe sans fin montée tournante autour d'un pignon d'entraînement et d'un guide-chaîne de forme généralement oblongue et muni d'un rail périphérique de guidage, et une source de puissance (par exemple constituée par un moteur thermique ou par un moteur électrique) réalisant l'entraînement de cette chaîne, par l'intermédiaire dudit pignon.Such cutting chain tools commonly called chainsaws are well known and are commonly used to cut various materials (wood, concrete, bricks, tiles, etc.). They comprise a cutting device consisting of an endless cutting chain rotatably mounted around a drive pinion and a generally oblong guide bar provided with a peripheral guide rail, and a power source. (For example constituted by a heat engine or an electric motor) performing the drive of this chain, through said pinion.

Pour le bon fonctionnement d'un outil de ce genre, il est indispensable d'assurer un graissage efficace entre le guide-chaîne et la chaîne de coupe afin de réduire les frottements générateurs d'échauffements, de perte d'efficacité, d'usure accélérée et de surconsommation d'énergie.For the proper functioning of such a tool, it is essential to ensure effective lubrication between the guide bar and the cutting chain to reduce friction causing overheating, loss of efficiency, wear accelerated and overconsumption of energy.

Dans ce but, un liquide de lubrification est stocké dans un réservoir où il est prélevé avant d'être acheminé vers l'ensemble guide-chaîne/chaîne de coupe par un conduit approprié. L'entraînement du liquide de lubrification sur l'ensemble guide-chaîne/chaîne de coupe est généralement réalisé par l'intermédiaire d'une pompe. Il est parfois obtenu par gravité (peu efficace) ou par la mise en surpression du réservoir de stockage (dosage difficile car dépendant de la pression et variant avec celle-ci).For this purpose, a lubricating liquid is stored in a tank where it is removed before being conveyed to the guide-chain / cutting chain assembly by a suitable conduit. The driving of the lubricating liquid on the guide-chain / cutting chain assembly is generally carried out via a pump. It is sometimes obtained by gravity (inefficient) or by putting the storage tank in overpressure (difficult to dose because it depends on the pressure and varies with it).

Lorsque le liquide de lubrification est entraîné vers l'ensemble guide-chaîne/chaîne de coupe par une pompe, ce qui correspond au cas le plus courant, cette pompe et la chaîne de coupe sont entraînées par le même moteur. La lubrification de la chaîne s'effectue alors en permanence et proportionnellement à la vitesse de rotation de ce moteur, ce qui entraîne une importante consommation de liquide de lubrification, sans pour autant être toujours suffisante lors de conditions de fonctionnement particulièrement difficiles qui accompagnent un freinage de la chaîne et un ralentissement du moteur, et donc d'une moindre lubrification de la chaîne.When the lubricating liquid is driven to the guide-chain / cutting chain assembly by a pump, which is the most common case, this pump and the cutting chain are driven by the same motor. The chain is then lubricated continuously and in proportion to the speed of rotation of the engine, which results in a significant consumption of lubricating liquid, without always being sufficient during particularly difficult operating conditions that accompany braking. of the chain and a slowing of the engine, and therefore of a lower lubrication of the chain.

Le document FR 2 505 719 décrit un dispositif de ce genre. Selon ce document, la pompe électro-magnétique de lubrification de la tronçonneuse est actionnée par le moteur thermique d'entraînement de la chaîne de cette dernière, par l'intermédiaire d'une magnéto et d'un micro-calculateur.The document FR 2,505,719 describes a device of this kind. According to this document, the electro-magnetic lubrication pump of the chainsaw is actuated by the drive motor of the chain of the latter, via a magneto and a microcomputer.

Plus concrètement, avec les procédés et systèmes de lubrification actuels, le bon dosage de la quantité d'huile prélevée dans le réservoir est difficile car le débit de la pompe augmente avec la vitesse de rotation du moteur et peut conduire à délivrer inutilement des volumes d'huile trop importants ; de plus, comme cette vitesse diminue lorsqu'on demande plus d'effort à la coupe, on diminue aussi la quantité d'huile envoyée sur la chaîne alors que c'est le moment où un bon graissage serait nécessaire pour réduire l'échauffement et l'usure.More concretely, with the current processes and lubrication systems, the correct dosage of the quantity of oil taken from the tank is difficult because the flow of the pump increases with the speed of rotation of the motor and can lead to needlessly deliver volumes of oil. too much oil; in addition, as this speed decreases when more force is required to cut, it also reduces the amount of oil sent to the chain when it is the time when a good lubrication would be necessary to reduce the heating and wear.

L'invention a au moins pour buts d'améliorer l'efficacité de la lubrification de l'ensemble guide-chaîne/chaîne de coupe des scies à chaîne et de leur pignon d'entraînement, de réduire la consommation de liquide de lubrification et d'éviter les projections sur l'opérateur qui sont fréquentes et occasionnent des salissures et des brûlures.The purpose of the invention is at least to improve the lubrication efficiency of the chain saw / chain cutter assembly of the chain saws and their drive gear, to reduce the consumption of lubricating fluid and to reduce avoid frequent projections on the operator and cause soiling and burns.

Selon l'invention, ce but est atteint grâce à une scie à chaîne définie par la revendication 1.According to the invention, this object is achieved by means of a chainsaw defined by claim 1.

Selon une autre importante disposition caractéristique, le moteur électrique d'entraînement de la pompe est piloté par une carte électronique, qui reçoit des données relatives à au moins un paramètre et/ou facteur de fonctionnement de ladite scie à chaîne.According to another important characteristic arrangement, the electric drive motor of the pump is controlled by an electronic card, which receives data relating to at least one parameter and / or operating factor of said chain saw.

De préférence, le moteur d'entraînement de la chaîne de coupe est constitué par un moteur électrique et ce moteur électrique est piloté par une carte électronique.Preferably, the drive motor of the cutting line is constituted by an electric motor and this electric motor is controlled by an electronic card.

Selon un mode d'exécution avantageux, la carte électronique de pilotage de la pompe électrique reçoit des données concernant le courant consommé par le moteur électrique d'entraînement de la chaîne de coupe et/ou relatives au couple de ce moteur, via la carte électronique de pilotage dudit moteur électrique, en cours d'utilisation de ladite scie à chaîne.According to an advantageous embodiment, the electronic control board of the electric pump receives data concerning the current consumed by the electric drive motor of the cutting chain and / or relative to the torque of this motor, via the electronic card. driving said electric motor, in use of said chain saw.

De préférence, la carte électronique de pilotage de la pompe électrique reçoit des données émanant de la carte électronique de pilotage du moteur électrique d'entraînement de la chaîne de coupe.Preferably, the electronic control board of the electric pump receives data from the electronic control board of the electric motor driving the cutting line.

Selon un mode d'exécution intéressant, la carte électronique de pilotage de la pompe électrique reçoit et traite des données issues d'un ou plusieurs capteurs.According to an interesting embodiment, the electronic control board of the electric pump receives and processes data from one or more sensors.

Selon un mode d'exécution, la scie à chaîne comporte un capteur permettant d'adresser, à la carte électronique de pilotage de la pompe électrqiue, des informations concernant la température du guide-chaîne.According to one embodiment, the chain saw comprises a sensor for addressing, to the electronic pump control board of the electric pump, information concerning the temperature of the guide bar.

Selon un autre mode de réalisation, la carte électronique de pilotage de la pompe électrique est configurée pour utiliser des informations relatives au débit du liquide de lubrification.According to another embodiment, the electronic control board of the electric pump is configured to use information relating to the flow of the lubricating liquid.

Avantageusement, la carte électronique de pilotage de la pompe électrique est configurée pour commander un fonctionnement intermittent de la pompe, afin d'adresser des doses de liquide de lubrification, vers le système de coupe.Advantageously, the electronic control board of the electric pump is configured to control an intermittent operation of the pump, in order to address doses of lubricating liquid, to the cutting system.

De manière préférée, la carte électronique de pilotage de la pompe électrique est configurée pour que l'envoi des doses successives soit espacé d'une période sensiblement constante et que les quantités de liquide de lubrification dans les doses soient fonction d'au moins l'un des paramètres ou facteurs de fonctionnement susmentionnés.Preferably, the electronic control board of the electric pump is configured so that the sending of the successive doses is spaced out by a substantially constant period and that the quantities of lubricating liquid in the doses are a function of at least one one of the aforementioned operating parameters or factors.

De manière intéressante, la pompe d'entraînement du liquide de lubrification est une pompe volumétrique, par exemple une pompe péristaltique, ou une pompe à membrane, ou une pompe à piston, ou une pompe à palettes, ou une pompe à engrenage.Interestingly, the lubricating liquid driving pump is a positive displacement pump, for example a peristaltic pump, or a diaphragm pump, or a piston pump, or a vane pump, or a gear pump.

Avantageusement, un même accumulateur de stockage d'énergie électrique alimente à la fois le moteur de ladite pompe électrique et le moteur d'entraînement du dispositif de coupe qui, dans ce cas, est constitué par un moteur électrique.Advantageously, the same storage battery for electrical energy supplies both the motor of said electric pump and the drive motor of the cutting device which, in this case, consists of an electric motor.

La scie à chaîne peut également comporter un dispositif de détection d'un débit insuffisant de liquide de lubrification vers le dispositif de coupe et de déclenchement d'un signal visuel ou sonore en cas de détection d'un tel débit insuffisant.The chain saw may also include a device for detecting insufficient flow of lubricating liquid to the cutting device and for triggering a visual or audible signal in the event of detection of such an insufficient flow rate.

Selon une autre disposition caractéristique intéressante de l'invention applicable aux scies à chaîne à perche, selon lesquelles une tête de scie comprenant les différents organes du dispositif de coupe et de leur système d'entraînement, est montée à l'extrémité haute d'une perche dont l'extrémité inférieure est munie d'une poignée de commande, le réservoir de stockage de liquide de lubrification et la pompe électrique de distribution de ce liquide de lubrification sont installés au niveau de ladite poignée, un conduit d'acheminement du liquide de lubrification reliant le réservoir de stockage au dispositif de coupe, ce conduit étant de préférence, logé dans ladite perche.According to another advantageous feature of the invention applicable to pole saws, according to which a saw head comprising the various members of the cutting device and their drive system, is mounted at the upper end of a machine. pole whose lower end is provided with a control handle, the lubricating liquid storage tank and the electric pump for dispensing this lubricating liquid are installed at the level of said handle, a conduit for conveying the liquid of lubrication connecting the storage tank to the cutting device, the conduit being preferably housed in said pole.

L'invention a également pour objet un procédé de lubrification de la chaîne de coupe d'une scie à chaîne telle que définie ci-dessus, dans lequel on pilote le débit de la pompe de distribution du liquide de lubrification, en fonction de la valeur d'au moins un paramètre ou facteur de fonctionnement de ladite scie à chaîne.The invention also relates to a method of lubricating the cutting line of a chain saw as defined above, in which the flow rate of the lubrication liquid distribution pump is controlled as a function of the value at least one parameter or operating factor of said chain saw.

Une autre caractéristique avantageuse de ce procédé peut être qu'on envoie de manière intermittente des doses de liquide de lubrification vers le dispositif de coupe.Another advantageous feature of this process may be that doses of lubricating liquid are intermittently fed to the cutting device.

Selon un mode de mise en oeuvre de ce procédé, on envoie les doses de liquide lubrification en espaçant les départs de ces doses d'une période sensiblement constante, lesdites doses contenant des quantités de liquide de lubrification qui sont fonction dudit paramètre ou facteur de fonctionnement.According to one embodiment of this method, the lubricating liquid doses are sent by spacing the departures of these doses by a substantially constant period, said doses containing amounts of lubricating liquid which are a function of said parameter or operating factor. .

Le dispositif et le procédé de lubrification selon l'invention procurent plusieurs avantages très intéressants :

  • ils permettent un dosage entièrement automatique de la lubrification, grâce auquel on obtient une diminution très sensible de l'échauffement et de l'usure de l'ensemble guide-chaîne/chaîne de coupe ;
  • ils réalisent un meilleur dosage de l'huile pour un bon fonctionnement du dispositif de coupe, quelles que soient les conditions d'utilisation de l'outil, ce qui permet une importante réduction de la consommation d'huile ;
  • ils conviennent aussi bien aux scies à chaîne à poignée qu'aux tronçonneuses à perche.
The device and the lubrication method according to the invention provide several very interesting advantages:
  • they allow a fully automatic dosing of the lubrication, whereby a very significant reduction in the heating and wear of the guide-chain / cutting chain assembly is achieved;
  • they achieve a better dosage of oil for proper operation of the cutting device, whatever the conditions of use of the tool, which allows a significant reduction in oil consumption;
  • they are suitable for both chain saws and pole saws.

L'invention sera mieux comprise à la lecture de la description qui suit, donnée uniquement à titre d'exemple et faite en se référant aux dessins annexés, selon lesquels :

  • la figure 1 est une vue en perspective d'une scie à chaîne à perche à laquelle peut être appliquée l'invention ;
  • la figure 2 est une vue en perspective, avec arrachements, de cette scie à chaîne pourvue du dispositif de lubrification de ses organes de coupe ;
  • la figure 3 est une vue synoptique du dispositif de lubrification de la figure 2 et d'un circuit électrique associé.
The invention will be better understood on reading the description which follows, given solely by way of example and with reference to the appended drawings, in which:
  • the figure 1 is a perspective view of a pole saw to which the invention can be applied;
  • the figure 2 is a perspective view, broken away, of this chain saw provided with the lubricating device of its cutting members;
  • the figure 3 is a synoptic view of the lubrication device of the figure 2 and an associated electrical circuit.

On se reporte aux dits dessins pour décrire un exemple avantageux, bien que nullement limitatif, de réalisation de la scie à chaîne et du procédé de mise en oeuvre de son système de lubrification selon l'invention.Reference is made to the said drawings to describe an advantageous, although in no way limiting, embodiment of the chain saw and the method of implementation of its lubrication system according to the invention.

On décrit ci-après une scie à chaîne et à perche, mais on souligne que l'invention est aussi applicable aux scies à chaîne à poignée de tous types (à poignée simple, à poignée surélevée, etc.) destinées à tous travaux (travaux d'élagage, travaux forestiers, sciage de matériaux divers...).A chain and pole saw is described hereinafter, but it is pointed out that the invention is also applicable to chain saws with handles of all types (single handle, raised handle, etc.) intended for all types of work (works pruning, forestry work, sawing of various materials ...).

Sur la figure 1 est représentée une scie à chaîne à perche 1 qui comporte une poignée 2 de commande montée à l'extrémité inférieure d'une perche tubulaire 3, à la partie supérieure de laquelle est montée, de manière orientable, une tête de coupe 4.On the figure 1 is shown a pole saw chain 1 which has a control handle 2 mounted at the lower end of a tubular pole 3, at the upper part of which is mounted, in a steerable manner, a cutting head 4.

La tête de coupe 4 comprend une chaîne de coupe 5 sans fin, montée à la périphérie d'un guide-chaîne 6 et sur un pignon d'entraînement 9. L'entraînement de cette chaîne de coupe 5, via le pignon d'entraînement 9, est réalisé par un moteur électrique se trouvant à l'intérieur d'un carter 7 à la figure 1 et référencé 8 à la figure 3. On n'exclut pas de réaliser cet entraînement au moyen d'un moteur thermique.The cutting head 4 comprises an endless cutting chain 5 mounted on the periphery of a chain guide 6 and on a driving pinion 9. The driving of this cutting chain 5 via the driving pinion 9, is made by an electric motor located inside a housing 7 at the figure 1 and referenced 8 to the figure 3 . It is not excluded to carry out this training by means of a heat engine.

Ainsi qu'on peut le voir sur la figure 2 sur laquelle la perche 3 est partiellement représentée, un dispositif de lubrification du système de coupe (guide-chaîne 6, chaîne 5 et pignon d'entraînement) est monté à l'extrémité inférieure de la perche 3, au niveau de la poignée 2. Ce dispositif de lubrification désigné dans son ensemble par la référence 10 comprend un réservoir de stockage 11 qui est destiné à contenir une réserve de liquide de lubrification tel que de l'huile et qui communique avec un conduit 12 d'acheminement de ce liquide jusqu'à la tête de coupe 4. Sur ce conduit 12, est raccordée une pompe 13 d'entraînement du liquide de lubrification vers ladite tête de coupe.As can be seen on the figure 2 on which the pole 3 is partially shown, a lubricating device of the cutting system (chain guide 6, chain 5 and drive pinion) is mounted at the lower end of the pole 3, at the handle 2. This lubrication device generally designated by the reference 10 comprises a storage tank 11 which is intended to contain a reserve of lubricating liquid such as oil and which communicates with a conduit 12 for conveying this liquid to at the cutting head 4. On this conduit 12 is connected a pump 13 for driving the lubricating liquid to said cutting head.

Selon une première disposition caractéristique de l'invention, la pompe 13 est accouplée à un moteur d'entraînement électrique 13a indépendant du moteur 8 d'entraînement de la chaîne de coupe 5 du dispositif de coupe 5-6 et faisant partie intégrante de l'outil.According to a first characteristic arrangement of the invention, the pump 13 is coupled to an electric drive motor 13a independent of the drive motor 8 of the cutting line 5 of the cutting device 5-6 and forming an integral part of the tool.

Avantageusement, la pompe électrique 13 est une pompe volumétrique capable d'envoyer le liquide de lubrification de manière intermittente, sous forme de doses successives, vers la tête de coupe 4. De préférence, il s'agit d'une pompe péristaltique, qui présente l'avantage d'être simple, robuste et fiable. Toutefois, la pompe électrique 13 délivrant le liquide de lubrification peut être constituée par tout autre type de pompe approprié, tel que pompe à membrane, ou pompe à piston, ou pompe à palettes, ou pompe à engrenage...Advantageously, the electric pump 13 is a positive displacement pump capable of sending the lubricating liquid intermittently, in the form of successive doses, to the cutting head 4. Preferably, it is a peristaltic pump, which has the advantage of being simple, robust and reliable. However, the electric pump 13 delivering the lubricating liquid may be constituted by any other type of suitable pump, such as diaphragm pump, or piston pump, or vane pump, or gear pump ...

Le réservoir 11, la pompe 13 et son moteur électrique d'entraînement 13a, sont logés dans le carter délimitant la poignée 2, d'où part le tronçon d'aspiration 12a du conduit 12. Le tronçon de refoulement 12b de ce conduit 12, de préférence constitué par un tuyau flexible, chemine ensuite à l'intérieur de la perche 3. D'une manière connue en soi, il se prolonge dans le guide-chaîne 6 sous la forme d'un trou de distribution ménagé dans ce dernier et débouchant sous la chaîne 5.The reservoir 11, the pump 13 and its electric drive motor 13a, are housed in the housing delimiting the handle 2, from which the suction section 12a of the duct 12 flows. The delivery section 12b of this duct 12, preferably constituted by a flexible pipe, then travels inside the pole 3. In a manner known per se, it extends in the guide bar 6 in the form of a dispensing hole formed in the latter and opening under the chain 5.

Selon une autre importante disposition caractéristique, le moteur électrique 13a d'entraînement de la pompe 13 est piloté par une carte électronique 20 configurée de manière appropriée, et la scie à chaîne comporte au moins un capteur permettant d'adresser, à ladite carte électronique, des informations relatives à au moins un paramètre ou facteur de fonctionnement de ladite scie à chaîne.According to another important characteristic arrangement, the driving electric motor 13a of the pump 13 is controlled by an appropriately configured electronic card 20, and the chainsaw comprises at least one sensor making it possible to address, to said electronic card, information relating to at least one parameter or operating factor of said chain saw.

On se réfère maintenant à la vue synoptique de la figure 3, pour décrire de façon plus complète, le système et le procédé de lubrification selon l'invention.We now refer to the synoptic view of the figure 3 to more fully describe the lubrication system and method according to the invention.

De manière préférée, le moteur 8 d'entraînement de la chaîne de coupe 5 est constitué par un moteur électrique et ce moteur électrique est également piloté par une carte électronique 15.Preferably, the drive motor 8 of the cutting chain 5 is constituted by an electric motor and this electric motor is also controlled by an electronic card 15.

Un même accumulateur 14 de stockage d'énergie électrique, de préférence constitué par une batterie portative, peut alimenter à la fois le moteur 13a de la pompe électrique 13 et le moteur électrique d'entraînement 8 du dispositif de coupe 5-6.A same storage battery 14 of electrical energy, preferably constituted by a portable battery, can supply both the motor 13a of the electric pump 13 and the electric drive motor 8 of the cutting device 5-6.

La carte électronique de pilotage 20 de la pompe électrique reçoit des données concernant le courant électrique consommé par le moteur électrique 8 d'entraînement de la chaîne de coupe, et/ou relatives au couple dudit moteur 8, via la carte électronique de pilotage 15 de ce dernier, en cours d'utilisation de la scie à chaîne.The electronic control board 20 of the electric pump receives data relating to the electric current consumed by the electric motor 8 for driving the cutting chain, and / or relating to the torque of said motor 8, via the electronic control card 15. the latter, in use of the chainsaw.

La carte électronique de pilotage 20 de la pompe électrique 13-13a reçoit et traite des données issues d'un ou plusieurs capteurs. Par exemple, la scie à chaîne est munie :

  • d'un capteur 17 permettant d'adresser, à la carte électronique de pilotage 20, des données concernant la température du guide-chaîne 6 et/ou
  • d'un capteur 16 permettant d'adresser, à ladite carte électronique de pilotage 20, des données relatives au débit du liquide de lubrification., vers le dispositif de coupe 5-6, et
  • d'un capteur 21 permettant d'adresser, à ladite carte électronique 20, des données concernant le niveau du liquide de lubrification contenu dans le réservoir 11.
The electronic control board 20 of the electric pump 13-13a receives and processes data from one or more sensors. For example, the chainsaw is equipped with:
  • a sensor 17 for addressing, to the electronic control card 20, data concerning the temperature of the guide bar 6 and / or
  • a sensor 16 for addressing, to said electronic control board 20, data relating to the flow of the lubricating liquid to the cutting device 5-6, and
  • a sensor 21 for addressing, to said electronic card 20, data concerning the level of the lubricating liquid contained in the reservoir 11.

La carte électronique 20 de pilotage de la pompe électrique 13-13a peut être configurée pour commander l'entraînement à vitesse variable de ladite pompe, en fonction d'au moins un paramètre issu des données relatives au courant électrique consommé par le moteur 8 d'entraînement de la chaîne de coupe, au couple de ce moteur, et/ou issu du capteur de température 17 du guide-chaîne 6, ou du capteur du débit d'huile 16, ou du capteur 21 de niveau d'huile.The electronic control board 20 of the electric pump 13-13a can be configured to control the variable speed drive of said pump, as a function of at least one parameter derived from the data relating to the electric current consumed by the motor 8. driving the cutting chain, the torque of the engine, and / or from the temperature sensor 17 of the guide bar 6, or the oil flow sensor 16, or the oil level sensor 21.

La carte électronique 20 de pilotage de la pompe électrique 13-13a est avantageusement configurée pour commander un fonctionnement intermittent de cette pompe afin d'adresser des quantités dosées de liquide de lubrification, vers le système de coupe 5-6.The electronic control board 20 of the electric pump 13-13a is advantageously configured to control an intermittent operation of this pump in order to address dosed amounts of lubricating liquid to the cutting system 5-6.

La carte électronique 20 de pilotage est configurée pour que l'envoi des doses successives de liquide de lubrification soit espacé d'une période sensiblement constante et que les quantités de liquide de lubrification dans les doses soient fonction d'au moins l'un des paramètres ou facteurs de fonctionnement susmentionnés.The control electronic card 20 is configured so that the sending of the successive doses of lubricating liquid is spaced out by a substantially constant period and that the quantities of lubricating liquid in the doses are a function of at least one of the parameters or the aforementioned operating factors.

La pompe d'entraînement 13 du liquide de lubrification est constituée par une pompe volumétrique, par exemple une pompe péristaltique, ou une pompe à membrane, ou un pompe à piston, ou une pompe à palettes, ou une pompe à engrenage.The driving pump 13 of the lubricating liquid is constituted by a positive displacement pump, for example a peristaltic pump, or a diaphragm pump, or a piston pump, or a vane pump, or a gear pump.

De préférence, et comme indiqué ci-dessus, la scie à chaîne comporte un dispositif de détection 21 d'un niveau insuffisant de liquide de lubrification dans le réservoir 11. Les insuffisances de débit ou de niveau d'huile constatées par les capteurs 16 ou 21, respectivement, entraînent le déclenchement, via la carte électronique de pilotage 20, d'un signal visuel ou sonore 19.Preferably, and as indicated above, the chain saw comprises a detection device 21 of insufficient level of lubricating liquid in the tank 11. The insufficiencies of flow or oil level observed by the sensors 16 or 21, respectively, cause the trigger, via the electronic control card 20, a visual or sound signal 19.

Dans l'application de l'invention aux tronçonneuses à perche (figures 1 et 2), selon laquelle une tête de scie 4 comprenant les différents organes du dispositif de coupe 5-6 et de leur système d'entraînement 8, est montée à l'extrémité haute d'une perche 3 dont l'extrémité inférieure est munie d'une poignée de commande 2, le réservoir 11 de stockage du liquide de lubrification et la pompe électrique 13-13a de distribution de ce liquide de lubrification, sont installés au niveau de ladite poignée 2 et un conduit 12a-12b d'acheminement du liquide de lubrification relie le réservoir de stockage 11 au dispositif de coupe 5-6 via ladite pompe, ce conduit 11 étant de préférence logé dans ladite perche 3.In the application of the invention to the pole saws ( Figures 1 and 2 ), according to which a saw head 4 comprising the various members of the cutting device 5-6 and their drive system 8, is mounted at the upper end of a pole 3 whose lower end is provided with a control handle 2, the reservoir 11 for storing the lubricating liquid and the electric pump 13-13a for dispensing this lubricating liquid, are installed at the level of said handle 2 and a conduit 12a-12b for conveying the liquid of lubrication connects the storage tank 11 to the cutting device 5-6 via said pump, this duct 11 being preferably housed in said pole 3.

Dans cette application, la carte électronique de pilotage 20 de la pompe électrique 13-13a peut être installée au niveau de la poignée 2, tandis que la carte électronique de pilotage 15 du moteur 8 d'entraînement de la chaîne de coupe 5 peut être positionnée au niveau de la tête de coupe 4.In this application, the electronic control board 20 of the electric pump 13-13a can be installed at the handle 2, while the electronic control board 15 of the drive motor 8 of the cutting chain 5 can be positioned at the cutting head 4.

Dans d'autres applications, telles que les tronçonneuses à poignée simple ou à poignée surélevée, les composants des cartes électroniques de pilotage 15 et 20, peuvent être rassemblés sur un même support et installés au niveau de la poignée de commande de l'outil.In other applications, such as chainsaws with single handle or raised handle, the components of the electronic control cards 15 and 20, can be collected on the same support and installed at the control handle of the tool.

De manière avantageuse, la scie à chaîne selon l'invention comporte encore un agencement permettant un actionnement direct de la pompe électrique 13-13a à partir d'un organe de commande manuelle, par exemple constitué par une gâchette 18 accessible sur la poignée 2 de l'outil, de sorte à permettre d'envoyer, de préférence de façon continue, de l'huile vers l'ensemble guide-chaîne/chaîne de coupe 5-6, sans passer par la carte électronique de pilotage 20 de ladite pompe électrique 13-13a. Une telle lubrification forcée est par exemple utilisée pour faire monter l'huile du réservoir 11 à la tête de coupe 5-6 lors de la première mise en route de l'outil, ou lorsque le circuit d'huile 12a est vide, avant l'actionnement du moteur 8, ou pour obtenir une purge de l'orifice de distribution d'huile ménagé dans le guide de chaîne 6.Advantageously, the chain saw according to the invention further comprises an arrangement allowing direct actuation of the electric pump 13-13a from a manual control member, for example constituted by a trigger 18 accessible on the handle 2 of the tool, so as to allow to send, preferably continuously, the oil to the chain guide assembly / cutting chain 5-6, without passing through the electronic control card 20 of said electric pump 13-13a. Such forced lubrication is for example used to raise the oil tank 11 to the cutting head 5-6 at the first start of the tool, or when the oil circuit 12a is empty, before the actuating the motor 8, or for purging the oil dispensing orifice formed in the chain guide 6.

Selon le procédé de l'invention, on pilote la pompe électrique de distribution 13-13a du liquide de lubrification, au moyen d'une carte électronique 20 en fonction de la valeur d'au moins un paramètre ou facteur de fonctionnement de la scie à chaîne.According to the method of the invention, the electric distribution pump 13-13a of the lubricating liquid is piloted by means of an electronic card 20 as a function of the value of at least one parameter or operating factor of the electric saw. chain.

Suivant un mode d'exécution avantageux, on envoie, de manière intermittente, des doses de liquide de lubrification vers le dispositif de coupe 5,6.In an advantageous embodiment, doses of lubricating liquid are sent intermittently to the cutting device 5, 6.

De manière préférée, dans ce cas, on envoie les doses de liquide de lubrification en espaçant les départs de ces doses d'une période sensiblement constante, les dites doses contenant des quantités de liquide de lubrification qui sont fonction dudit paramètre ou facteur de fonctionnement.Preferably, in this case, the doses of lubricating liquid are sent by spacing the departures of these doses by a substantially constant period, said doses containing amounts of lubricating liquid which are a function of said parameter or operating factor.

Claims (22)

  1. A chain saw comprising an endless cutting chain (5) mounted rotatorily on a drive pinion and on a chain guide (6) provided with a guide rail, a motor (8) driving this cutting chain, by means of the said pinion, a tank (11) for storing a lubrication fluid, together with a pump (13) for driving the lubrication fluid to a chain guide/cutting chain assembly (5-6) from the storage tank (11), wherein said pump (13) is coupled to an electric drive motor (13a), characterised in that said drive motor of the pump is independent of the drive motor (8) of the cutting chain (5) allowing direct actuation of the electric pump from a manual control mechanism before actuation of the drive motor of the cutting chain.
  2. The chain saw according to Claim 1, characterised in that the electric drive motor (13a) of the pump (13) is controlled by an electronic card (20) which receives information relating to at least one operating parameter or factor of said chain saw in such a manner as to modulate the lubrication flow.
  3. The chain saw according to any one of Claims 1 or 2, whose drive motor of the cutting chain (5) comprises an electric motor (8), characterised in that the electric motor is controlled by an electronic card (15).
  4. The chain saw according to Claim 3, characterised in that the electronic card (20) controlling the electric pump (13-13a) is configured to receive data deriving from the electronic control card (15) of the electric drive motor (8) of the cutting chain (5).
  5. The chain saw according to any one of Claims 3 or 4, characterised in that the electronic control card (20) of the electric pump (13-13a) and the electronic control card (15) of the electric drive motor (8) of the cutting chain (5) are combined in one and the same electronic card.
  6. The chain saw according to any one of Claims 3, 4 or 5, characterised in that the same electrical energy storage accumulator (14) supplies simultaneously the motor (13a) of said electric pump (13) and the drive motor (8) of the cutting device (5-6).
  7. The chain saw according to any one of Claims 3, 4 or 5, characterised in that the electronic control card (20) of the electric pump (13-13a) receives data relating to the current consumed by the electric drive motor (8) of the cutting chain (5) via the electronic control card (15) of said electric motor whilst using said chain saw.
  8. The chain saw according to any one of Claims 3, 4 or 5, characterised in that the electronic control card (20) of the electric pump (13-13a) receives data relating to the torque of the electric drive motor (8) of the cutting chain (5) via the electronic control card (15) of said electric motor whilst using said chain saw.
  9. The chain saw according to any one of Claims 2 to 8, characterised in that the electronic control card (20) of the electric pump (13-13a) receive and processes data transmitted by one or more sensors.
  10. The chain saw according to any one of Claims 2 to 9, characterised in that it comprises a sensor (17) data relating to the temperature of the chain guide (6) to be transmitted to the electronic control card (20) of the electric pump (13).
  11. The chain saw according to any one of Claims 2 to 10, characterised in that it comprises a sensor (16) enabling data relating to the flow of the lubrication fluid to be transmitted to the electronic control card (20) of the electric pump (13-13a).
  12. The chain saw according to any one of Claims 3 to 11, characterised in that the electronic control card (20) of the electric pump (13-13a) is configured for controlling the variable speed derive of said pump as a function of at least one parameter derived from the data relating to the current consumed by the drive motor (8) of the cutting chain (5) or to the torque of this motor, and/or derived from a temperature sensor (17) of the chain guide (6), and/or a sensor (16) of the oil flow, and/or an oil level sensor (21).
  13. The chain saw according to any one of Claims 2 to 12, characterised in that the electronic control card (20) of the electric pump (13-13a) is configured for controlling an intermittent operation of this pump (13) in order to transmit lubrication fluid doses to the cutting device (5-6).
  14. The chain saw according to Claim 13, characterised in that the electronic control card (20) is configured so that the transmission of the successive doses is spaced by an essentially constant period and so that the quantifies of lubrication fluid in the doses are a function of at least one of the operating parameters and/or factors of the saw.
  15. The chain saw according to Claims 1 to 14, characterised in that the drive pump (13) for the lubrication fluid is a volumetric pump, for example a peristaltic pump, or a membrane pump, or a piston pump, or a pallet pump or a gear pump.
  16. The chain saw according to any one of Claims 1 to 15, characterised in that it comprises a device (16) for detecting an insufficient flow of lubrication fluid to the cutting device (5-6) and for triggering a visual or acoustic signal (19) if such insufficient flow is detected.
  17. The chain saw according to any one of Claims 2-16, characterised in that it comprises a device (21) for controlling the level of lubrication fluid contained in the tank (11), the insufficiencies of flow detected by this device (21) resulting in the triggering, via then electronic control card (20) of the electric pump (13-13a), of a visual or acoustic signal (19).
  18. The chain saw according to any one of Claims 1 to 17, of the pole pruner type, wherein a saw head (4) comprising the different mechanisms of the cutting device (5-6) and their drive system (8) is mounted at the upper end of a pole (3) whose lower end is fitted with a control handle (2), characterised in that the storage tank (11) for the lubrication fluid and the electric pump (13-13a) for the distribution of this lubrication fluid are installed at the level of said handle (2), wherein a feed pipe (12) for the lubrication fluid connects the storage tank (11) to the cutting device (5,6) and wherein this pipe (11) is preferably housed in said pole (3).
  19. The chain saw according to any one of Claims 9 to 18, characterised in that it comprises a drive allowing direct actuation of the electric pump (13-13a) from a manual control mechanism (18), thus enabling the oil to be fed to the chain guide/cutting chain assembly (5, 6).
  20. A method for lubricating the cutting device of a chain saw according to Claim 1, characterised in that the flow of the electric distribution pump (13-13a) for the lubrication fluid is controlled by means of an electronic card (20) as a function of the value of at least one operating parameter and/or factor of said chain saw.
  21. The lubrication method according to Claim 20, characterised in that doses of lubrication fluid are supplied intermittently to the cutting device (5, 6).
  22. The lubrication method according to Claim 21, characterised in that the doses of lubrication fluid are supplied by spacing the discharges of these doses by an essentially constant period, wherein said doses contain quantities of lubrication fluid which are a function of said operating parameter or factor.
EP20080358004 2007-02-26 2008-02-25 Chainsaw equipped with a lubrication device and method implemented to perform this lubrication Active EP1961529B1 (en)

Applications Claiming Priority (1)

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FR0701357A FR2912948B1 (en) 2007-02-26 2007-02-26 CHAIN SAW COMPRISING A LUBRICATION DEVICE AND METHOD FOR IMPLEMENTING SAID LUBRICATION

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EP1961529A1 EP1961529A1 (en) 2008-08-27
EP1961529B1 true EP1961529B1 (en) 2013-07-24

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US (1) US20100043234A1 (en)
EP (1) EP1961529B1 (en)
JP (1) JP5465013B2 (en)
KR (1) KR20100014656A (en)
CN (1) CN101668617B (en)
AU (1) AU2008235393B2 (en)
BR (1) BRPI0807792A2 (en)
CA (1) CA2679080C (en)
FR (1) FR2912948B1 (en)
HK (1) HK1137696A1 (en)
MX (1) MX2009009054A (en)
NZ (1) NZ579524A (en)
RU (1) RU2440889C2 (en)
WO (1) WO2008122717A1 (en)

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CN101668617A (en) 2010-03-10
RU2440889C2 (en) 2012-01-27
MX2009009054A (en) 2010-01-15
AU2008235393B2 (en) 2013-11-07
CA2679080A1 (en) 2008-10-16
NZ579524A (en) 2012-04-27
WO2008122717A1 (en) 2008-10-16
AU2008235393A1 (en) 2008-10-16
FR2912948B1 (en) 2010-02-12
HK1137696A1 (en) 2010-08-06
BRPI0807792A2 (en) 2014-06-03
CA2679080C (en) 2014-10-21
JP5465013B2 (en) 2014-04-09
RU2009135788A (en) 2011-04-10
JP2010519077A (en) 2010-06-03
KR20100014656A (en) 2010-02-10
US20100043234A1 (en) 2010-02-25
FR2912948A1 (en) 2008-08-29
CN101668617B (en) 2013-08-14
EP1961529A1 (en) 2008-08-27

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